Apparatus for cutting glass



1927. A 1,618,089l Feb 15 vH. F. HITNER 1 APPARATUS FOR CUTTING GLASS Filed sept. 11, 1923 s sheets-sheet 1 m F" v Y @-1 :c l l i I l Q w ll Il rl n n u nl' u n M a, "g3g/@Wl Teb. 15, 1927.

l v1,618,089` H.A F. HITNER 5 APPARATUS FOR CUTTING- GLASS` l' www irs f-.sir Ar s HARRY 1r.V HITNER, or PITTSBURGH,VPENNSYLvANIA, ASSrGNon 'To' :'ITTSBURGH' PLATE GLAsS COMPANY, AooRPoRATIoN or PENNSYLVANIA.

APPARATUS non CUTTING GLASS.

Application led September 11, 1923. Serial No'. 662,071

The invention relates to apparatus for cutting glass which is formed in a. continuous sheet or ribbon into lengths or sections. It has for its principal object the provision of an improved and simplified form of apparatus for accomplishing the above 'unction automatically. One embodiment of the invention is illustrated in the accompanying drawings wherein Figure 1 is a transverse ySection through the table on which the glass is delivered from the leer, showing the cutting. apparatus in end elevation.` Fig. 2 is a longitudinal sec-m tion through qthe table Showing the cutting apparatus in side elevation. Fig. 3 is an enlarged side elevation view of the motor and cutter carried thereby. Fig. 4 is a view similar to that of Fig. 3 showing a modied form of cutter. Fig. 5 is a diagrammatic view showing the electrical connections, and Figs-6 and 7 are enlarged detail views of the reversing switches. f

One of the primary features of construc tion is the use of va cutter frame extending transversely of t-he glass which during thej cutting intervals rests upon the glass and is `carried along thereby, and" which in theA intervalsl between cutting is lifted from the glass and swings by gravity back to starting position, Ythe ramebeing ,pro-` ,vided with motor and a cutter mounted for movement longitudinally thereof," by meansgof which the cutting' operation is ac# complished as the frame is carried along by. the glass ribbon. MThis general feature of vconstruction simpliies the apparatus, as the `glass itself :acts as the track or supporti-for the Vcutting' frame as well' as the motive power forcarrying it forward, thus avoiding the necessity of providing tracks and mechanical means for moving the frame forward with the glass during .the cutting operation and then back to starting position. Y Referring to the drawings, 1 is the outlet end ofa leer through which a continuously formed vsheet or ribbon otglass 2 is conducted .uponv the rollers 3'V or other .suitable conveying Amechanism driven from the chain 4 engaging sprockets on the ends of the rollers. As'it emerges from the leerthe shcetissupported upon the-series of rollers 5, carried by the framework 6.

The cutting-ottl device comprises a trame lco1rsistin, ,rof a pair of angles .or rails l7, 7

' Secured'rigidly together at their ends by the brackets 8, 8 (Fig. 1).y and'l acarriagel 9 mounted on .-therails,'and carrying the motor steel, or rother suitable. materiali The rails 7 ,-7 also carry. at their ends the rearwardly projecting brackets 12 and 13 (Fig. 3) upon. which are mounted the rolls 14 adapted to engage the guide-plates 15 bolted to the framework 6 and serving to limitthe movementl of the cutting device to the right as hereinafter set forth. The brackets 8, which connect the ends of the rails 7, 7 Valso carry the dash pot cylindersf16 with which the plruigers 17, mounted upon the carriage 9, are adapted .to cooperate when the carriage reaches Vthe ends of its stroke, so as .to cushion the impact ofthe carriage at Such points.

The carriage 9 consists ot a bottomv plate 18, from which the motor 10 is suspended by means oi the bolts 19 as'indicated in Fig. 3, and a pair of Side plates20 and 21 (Fig- 3) in which are journaled the shafts 22 and 23 carrying` the pairs of" wheels 24 and 25 of the carriage. rThese wheels are `flanged as cutting or scoring wheel 11a of carborundum,

y10 upon the shaft 11 of which is mounted a indicated -in Fig. 3v and rideupon the vertical flanges ofthe railsv7,'7. Also journaled iny driven' by a beltjSO-(Fig- 3) passing around the pulley 31 onl theshaftll 'of the motor. The motor thus acts `'through the belt yand pulley connections and-reduction gearing, as just described, to move the carriage 9 and `forth along the rails 7,17. In order to seat the carriage the glass ribbon 2 operation, the railsV 7, 7'are each provided with three legs or feet preferably in the form of the rubber blocks 32. Provision isfmade for holding thecutter yieldingly in operative Yposition by the use of the springs 33 encircling the bolts 19 (Fig. 3) f j The carriage'and litszsupporting frame are iirmly upon back during the cutting oriv raised andflowered by means ofthe pair of positions as illustrated, so that the carriage frame is tree to be carried along by the glass,

' as it rests thereon, during the cutting or VThis shaft also carries rwhich is driven by a chain 50 passing scoring operation. t

The levers 34 are swung about their pivot by means of the pull rod operated trom the cani 41, the pull rod being provided at 'its lower end with a roller 42 engaging the periphery of the cam. The bracket in `which the cam is journaled has one ot its sides .slotted so as to receive the laterally bent lower end 44 to the pull rod, thus providing a guideway tor such lower end. The cam is keyed to its shatt 45 to whichV isvalso keyed the gear 46, and this gear is driven by thev pinion 47 carried by the shaft'-48. the sprocket 49,

around aV .sprocket 51 on the end oiE one ot the .driven rolls'3. The gearing tordriving the camv is arranged to give the cam yone revolution for each length ot glass tombe cut from the ribbon.

YThe end of one of the levers 34is'pivotally .secured to the upper end otthe pull rod by' means of the bolt 52 (Fig. 7 Yand such end is provided with two-pairs ot switch members, 53 and 54 and55 and adapted to cooperate with the switch members 57 andV 58 and 59 and 60, said latter switch members being. mounted o n the brackets 61 and 62 projecting from t-heposts 36, the arrangement being such that when the end ot the vlever 34 is inits uppermost position the switch members 53 and 54 engage the switch members 57 and V58, and when Asuch end is in its lower position the y switch members and 56l engage theswitch members 59 and 60. The'switch members 53, 54, 55 and 56are connected to the ,incoming leads 63 and A64 as indicatedin Fig. 5,V while the switch members 57, 58,59 and GOare connected to the armature A ot the 4motor 10- by meansot` the wiresr65, 66, 67

and 68, with the interposed contact breaking switch comprising the member-69 carried by the slide rod 70 andthe Contact clips 71 and 72. The rod 7 0 is provided with a pair ot adjustable stops 72 and 74 adapted to be engaged by the carriage 9 of the I motor when the'carriage reaches its eXtreme lateral positions, at which time it is desired to cut 0E the current through the armature. The field 75 of the motor 10 is'supplied with current through the" wires` V7 6 and 77. ThisY arrangement provide-d VJfor automatically stopping the motor when lthe carriage reaches its extreme end positions and tor reversing the direction of motion of the motor after each of said stops.

- The operation of the apparatus is Vas follows, starting with the parts in the posi- `6- tion of Fig. 2.l At this time the roller 42 carried bythe rod 40 engages the low por- .time, the right hand end ot end ot the lever 34 is lowered .so that the carriage 'traine rests upon the glass vsheet and is carried along thereby. At this same the lever 34 is in its upper position .so that the switch members 58A and 54 (Fig. engage the members and 58, and there is a iiow of current through the armature A of the motor 10 so that the mot-or is driven torwardly, thus rotating the cutter wheel 11a and moving the carriage 9 across the sheet ot glass from right to lett (Figs. 1 and This continues untilthe carriage'strikes the stop 7 8, 'thus moving the rod 70 to the lett and breakin the vcontact between the members 69 and 72, andcutting oli the supply ot current to rthe motor armature. `vThis movement also brings the member 69 in Contact with the member 71, so that provision is made tor reversing the motor when operation the cam 41 has rotated so that the high portion b engagesthe roller 42 moving the push rod down and lifting the carriage trame and the parts carried thereby tree from the glass sheet and bringing the switch members 55 and-56 into engagement with the members 59 and 60. This reverses the current through the armature, Vso that the carriage runs backward on the rails 7, 7 to starting position, this movement being stopped when the carriage engages the stop 74 and shifts the rod 70 to therightthus separating the members 69 and 71 andy stopping AJthe motor. When the carriage frame andthe parts carried thereby were vlifted trom the glass as above described, the parts ing position ot vthe device.v The carriagev supporting trame is maintainednin suspended position until the' high `portion ot theI cani passes the roll-er 42, and period. the cutot' passes beneath the frame. At the end of this period the low portion of the cam reaches the roller 42v thus permitting the rod 40 to rise and lower the frame with its carriage onto the glass and the cycle is repeated. Y* y p.

Fig. 4 Villustrates a modiiication of the cutter construction'in which the small'nondriven wheel 11b takes the place ot the driven wheel 11. ot Fig. 3, the construction in other respects beingV theV same as that ot What Txclaim is:. Y l 1. The combination Vwith means for carrying torward a continuously `formed hori- Zontal ribbon otglass, of cutting 0E apparatus comprising a cutter` trame above said4r means extending transversely thereof,

during this length ot glass which is to beV Btl the frame, so that during the cutting opera,

tion it may rest upon the glass and be carried along thereby.

l2. The combination with means for carrying forward a continuously formed horiZo-ntal ribbon of glass, of cutting off apparatus comprising a cutter frame, means for suspending said apparatus above said carrying means, including flexible means extending upward from the apparatus, 'cutter means mounted forrmovement longitu'dinallyrof the frame and having a motor for moving the cutter means along the frame, and means for raising and lowering the flexible means, so that'when the frame is lowered,it may engage the. glass and be moved along therewith during` the cutting operation.

3. The combination with means for carrying forward a continuously formed horizontal ribbon of glass, of cutting off means comprising a cutter frame above said means and extending transversely thereof, flexible means supporting said frame, a cutter means mounted for movement longitudinally of the frame and having a motor for moving the `cutter means along the frame, means for raising and lowering the flexible means, so that when the frame is lowered, it may engage the glass and move forward therewith during the cutting operation, andl stop means for engaging the cutter frame and limiting its movementV to therear when Ythe flexible means are raised to lift the frame free from the glass. y

4. The combination ywith means for carrying forward a continuously formed horizontal ribbon of glass, of cutting olf means comprising a cutter frame above said means and extending transversely thereof, flexible means supporting saidpframe, a cutter means mounted for ymovement longitudinally of the frame and having a motor for moving the cutter means along the frame, Ameans for raising and lowering the flexible means, so

vthat when the frame is lowered it may engage the glass and move forward therewith during the cutting operation, and electrical connections for the motor including con-V tact means loperable by said Vraising and y lowering movement for starting the motor forwardto moveythe cutter means across the glass when the frame is lowered and for reversing the motor to move the cutter means in the reverse directionwhen the ,frame is raised. v

In testimony whereof, I have hereunto subscribed my name this 18th day of Aug., 1923.

l HARRY F. 'HITNER 

